Certify an image

Choose an image (up to 1 MiB on the free sample, one a day). The server compresses it to the smallest version a model reads the same way, measures the drift with a deterministic witness, and returns an Assay record signed by the issuer’s key. The record keeps hashes and dimensions; the pixels are not kept, so the page shows the image you sent beside the record (the API returns the record, never pixels). An image by URL goes as a GET.

Only send an image you are free to send. The worked version is Certify a screenshot.